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JOHN D. CLARK L.P.C.
NPI 1235223041
Counselor - Professional in Martinsburg, WV

Active since October 03, 2006PECOS Enrolled
235 S WATER ST, MARTINSBURG, WV 25401(304) 263-8954 Get Directions Write a Review

NPPES record last updated: February 4, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Feb 4, 2026, Sep 19, 2024 (2 updates tracked since 2024).

About John D. Clark L.p.c. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JOHN D. CLARK L.P.C. (NPI 1235223041) is an individual professional provider in Martinsburg, West Virginia, licensed in Michigan (6401007651) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1235223041
Entity TypeIndividualMale
Primary Taxonomy101YP2500X
Provider Legal NameJOHN D. CLARKCredential: L.P.C.
Location Address235 S WATER STMartinsburg, WV 25401-4241
Mailing Address235 S Water StMartinsburg, WV 25401-4241 · (304) 263-8954
Phone(304) 263-8954
Sole ProprietorNo
Enumeration DateOctober 3, 2006
Last NPPES UpdateFebruary 4, 20262 updates tracked since enumeration
NPPES CertifiedFebruary 4, 2026
✔ NPI 1235223041 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · ProfessionalBehavioral Health & Social Service Providers
Taxonomy Code101YP2500X
License✔ Licensed in MI · 6401007651
235 S WATER ST, Martinsburg, WV 25401
Open in Google Maps ↗

Other Identifiers 1

Medicaid0023817001WV

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

John D. Clark L.p.c. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show John Clark reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Eastern Panhandle Mental Health (rehab)
Same address
Community/Behavioral Health
235 S WATER ST
Martinsburg, WV 25401
  • Reassigned Medicare billing, West Virginia enrollment
  • 12 clinicians in this Medicare group
NPI 1427197748 (304) 263-8954

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ELIZABETH ANN SHORT
Peer Specialist
235 S WATER ST
MARTINSBURG, WV 25401
Berkeley County (304) 263-8954
MATTHEW GREELEY PMHNP-BC
Nurse Practitioner (Psychiatric/Mental Health)
235 S WATER ST
MARTINSBURG, WV 25401
Berkeley County (304) 263-8954
HUNTER TRIVETT
Peer Specialist
235 S WATER ST
MARTINSBURG, WV 25401
Berkeley County (304) 263-8954
ANDREA ABEREGG
Social Worker
235 S WATER ST
MARTINSBURG, WV 25401
Berkeley County (304) 263-8954
MARQUIS WOODS
Community Health Worker
235 S WATER ST
MARTINSBURG, WV 25401
Berkeley County (304) 263-8954
MARLENE LOANZON
Technician (Personal Care Attendant)
235 S WATER ST
MARTINSBURG, WV 25401
Berkeley County (304) 263-8954
LISA CARTER
Community Health Worker
235 S WATER ST
MARTINSBURG, WV 25401
Berkeley County (304) 263-8954
ISVERA ZONDO
Counselor
235 S WATER ST
MARTINSBURG, WV 25401
Berkeley County (304) 263-8954

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Clark's NPI number?

The NPI number for John Clark is 1235223041. It was assigned to this individual provider in the NPPES registry on October 3, 2006.

Where is John Clark located?

John Clark practices at 235 S Water St, Martinsburg, WV 25401. The listed phone number is (304) 263-8954.

What is John Clark's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Professional, with taxonomy code 101YP2500X.

Is John Clark enrolled in Medicare?

Yes. John Clark is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for John Clark's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John Clark reassigns Medicare benefits to Eastern Panhandle Mental Health (rehab) (Martinsburg, WV). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Clark's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does John Clark accept?

Health plans from CareSource list John Clark as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for John Clark was last updated on February 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.